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Birkeland, Karl W.; Halfpenny, James C. – Science Teacher, 1987
Discusses some of the ecological variables involved with plant and animal survival during the winter months. Addresses the effects of changing climatic conditions on habitats, foot-loading indexes, and the overall concept of adaptation. Provides some simple teaching activities dealing with winter survival. (TW)
Descriptors: Biology, Climate, Ecological Factors, Ecology